Clamping Voltage Events Such As ESD
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United States of America Patent
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Issued Date -
Oct 2, 2008
app pub date -
Apr 1, 2007
filing date -
Apr 1, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A clamping scheme using dual sensing detection, which can sense and differentiate (in the extreme) between a high voltage level and fast (enough) slope (indicative of ESD), and low voltage level and slow slope (indicative of normal operation) and/or low voltage level and fast slope (indicative of hot insertion). It can also generate a locking scheme to ensure proper discharging only if the level is above high level and fast slope. It can also operate the clamping for a short time only if the level is below the high level but above the low level, and of sufficient slope.
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